\begin{lstlisting}
sage: (r,s) = (3,5)
sage: G = SymmetricGroup(r*s)
sage: S = [ i+s*j for i in range(1,s+1) for j in range(r) ]
sage: S
[1, 6, 11, 2, 7, 12, 3, 8, 13, 4, 9, 14, 5, 10, 15]
sage: G(S) 
(2,6,12,14,10,4)(3,11,9,13,5,7)
\end{lstlisting} %link
